Sour Grapes
Of course we're Fair and Balanced!


The power of sensory illusion

From one of my favorite websites of all times, one I has visited almost daily for something like 10 years, the Astronomy Picture of the Day, this the one for 17 July 2007:

A powerful visual illusion showing a checkerboard pattern with a light square in shadow that's the same color as a unshadowed black square, though the eye refuses to believe it

Are square A and B the same color? They are. Are too. To verify this, click on the above image to see them connected. The above illusion, called the same color illusion, illustrates that purely human observations in science may be ambiguous or inaccurate. Even such a seemingly direct perception as relative color.

Blog home
Blog archives